Anais Nin.

Anais Nin lived an extraordinary life. If you know nothing about her, Google her. Although she was a dancer, an actress and psychoanalyst (who studied with Freud and Rank), it is her writing, which was infused with incredible insight and exquisite beauty, for which she will be immortalized.
Here are just a few quotes:

We don't see things as they are, we see them as we are.

Creation which cannot express itself becomes madness.

If what Proust says is true, that happiness is the absence of fever, then I will never know happiness. For I am possessed by a fever for knowledge, experience and creation.

Shame is the lie someone told you about yourself.

We don't have a language for the senses. Feelings are images, sensations are like musical sounds.

The role of the writer is not to say what we all can say, but what we are unable to say.